//////////////////////////////////////////////////////////////////////////
//
//  Copyright (c) 2020, Cinesite VFX Ltd. All rights reserved.
//
//  Redistribution and use in source and binary forms, with or without
//  modification, are permitted provided that the following conditions are
//  met:
//
//      * Redistributions of source code must retain the above
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//        disclaimer.
//
//      * Redistributions in binary form must reproduce the above
//        copyright notice, this list of conditions and the following
//        disclaimer in the documentation and/or other materials provided with
//        the distribution.
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//      * Neither the name of John Haddon nor the names of
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//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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//////////////////////////////////////////////////////////////////////////

#include "fmt/format.h"

namespace Gaffer
{

template<typename T>
const T *ValuePlug::getObjectValue( IECore::ConstObjectPtr &owner, const IECore::MurmurHash *precomputedHash ) const
{
	const IECore::Object *value = getValueInternal( owner, precomputedHash );
	if( value && value->isInstanceOf( T::staticTypeId() ) )
	{
		return static_cast<const T *>( value );
	}

	throw IECore::Exception( fmt::format(
		"{} : getValueInternal() didn't return expected type (wanted {} but got {}). Is the hash being computed correctly?",
		fullName(), T::staticTypeName(), value ? value->typeName() : "nullptr"
	) );
}

} // namespace Gaffer
